<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	
	private $_id; 	
		
	public function UserIdentity($name,$pass)
	{
		$this->username = $name;
		$this->password = $pass;
	}
		
	public function authenticate() 
	{ 

		$users = LoginForm::model()->findByAttributes(array('username'=>$this->username));
		
		if($users === null) 
		{ 
			$this->errorCode = self::ERROR_USERNAME_INVALID; 
		} 
		else 
		{ 
			if($users->password !== md5($this->password))  //$users->encrypt
			{ 
				$this->errorCode = self::ERROR_PASSWORD_INVALID; 
			} 
			else 
			{ 
				$this->_id = $users->id; 
				if($users->lastvisitDate === null) 
				{ 
					$lastLogin = time(); 
				}
				else 
				{ 
					$lastLogin = strtotime($users->lastvisitDate); 
				} 
				$this->setState('lastvisitDate', $lastLogin); 
				$this->errorCode = self::ERROR_NONE; 
				return $this->errorCode; 
			}
		} 
		//return !$this->errorCode; 
	} 
	public function getId() 
	{ 
		return $this->_id; 
	}
}

	
	
